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WHEN IT'S ON

Secrets of the Viking Sword

Wed. Aug 5, 9:00 PM
WGBH 2

Mystery of Easter Island

Wed. Aug 5, 10:00 PM
WGBH 2

Secrets of the Viking Sword

Thu. Aug 6, 2:00 AM
WGBX 44

At the Edge of Space

A high-flying weather observation plane skirts the earth-space boundary zone in a search for sprites, which are fleeting flashes that flicker upwards from thunderstorms for a split-second. Included: footage shot from the International Space Station.

Followed by:Nova: Asteroid: Doomsday or Payday? at 9pm on WGBH 2. Examine whether asteroids could be our economic salvation — or instruments of extinction. Watch a preview.

CLIPS

More NOVA

NOVA Next is NOVA’s award-winning digital publication that provides answers from the cutting edge of science and technology. Featuring in-depth articles and commentaries from some of the most respected journalists, scientists, and engineers, NOVA Next explores the ideas that are changing the future.

NOVA Labs is a new digital platform designed for teens or “citizen scientists” to actively participate in real science. From predicting solar storms and designing renewable energy systems to tracking cloud movements and learning cybersecurity strategies, visitors to NOVA Labs can take part in real-world investigations by visualizing, analyzing, and sharing the same data that scientists use.

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ABOUT NOVA

PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA programs demystify science and technology, and highlight the people involved in scientific pursuits.